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An air-filled parallel-plate capacitor has a capacitance of 1.4 pF. The separation of the plates is doubled and wax is inserted among them. The new capacitance is 2.1 pF. Discover the dielectric constant of the wax.
A long jump shot is released 2.5 meter above the ground, 6.13 meter from the base of the basket, which is 3.05 meter high. determine the speed needed to make the basket
A parallel-plate air-filled capacitor having area 50 cm2 and plate spacing 1.3 mm is charged to a potential difference of 710 V, find the energy density between the plates
A yo-yo is made from two uniform disks, each with mass M/2 and radius R, associated by a light axle of radius r(R>r). Since the axle is nearly mass less, the total mass of the yo-yo is M. A light, thin string is wound several times around the axle.
A copper wire is 6.00 m long and has a cross-sectional area of 2.00 10^-4 m2. what is the maximum torque that can act on it
A light bulb radiates most strongly at a wavelength of about 3000 nm. What is the temperature of its filament
Suppose that after a centrifuge in a medical laboratory is turned off, it continues to rotate with a constant angular deceleration for 10.40 s before coming to rest. How numerous revolutions did the centrifuge complete after being turned off.
The components of the electric field in an electromagnetic wave traveling in vacuum are described by Ex = 0, Ey = 0, and Ez = 4.88 sin(kx - 1.44×108 t) V/m, where x is measured in meters and t in seconds.
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second.
A golfer imparts a speed of 29.2 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. How much time does the ball spend in the air?
A 5.5 kilogram bowling ball and a 7.5 kilogram bowling ball rest on a rack 0.54 meter apart. Find the force of gravity exerted on each of the balls by the other ball
a 7.4 cm-diameter-baseball has a mass 145 g and is spinning at 2000 rpm. Treating the baseball as a uniform solid sphere, whats its angular momentum
hree charges are fixed in place as shown. the squares in the grid have sides of length s 0.24 m. the magnitude of q is
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